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Diffstat (limited to 'boost/type_erasure/derived.hpp')
| -rw-r--r-- | boost/type_erasure/derived.hpp | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/boost/type_erasure/derived.hpp b/boost/type_erasure/derived.hpp new file mode 100644 index 0000000000..42316d2b57 --- /dev/null +++ b/boost/type_erasure/derived.hpp @@ -0,0 +1,37 @@ +// Boost.TypeErasure library +// +// Copyright 2011 Steven Watanabe +// +// Distributed under the Boost Software License Version 1.0. (See +// accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +// +// $Id$ + +#ifndef BOOST_TYPE_ERASURE_DERIVED_HPP_INCLUDED +#define BOOST_TYPE_ERASURE_DERIVED_HPP_INCLUDED + +namespace boost { +namespace type_erasure { + +/** + * A metafunction which returns the full @ref any type, + * when given any of its base classes. This is primarily + * intended to be used when implementing @ref concept_interface. + * + * \see rebind_any, as_param + */ +template<class T> +struct derived +{ +#ifdef BOOST_TYPE_ERASURE_DOXYGEN + typedef detail::unspecified type; +#else + typedef typename T::_boost_type_erasure_derived_type type; +#endif +}; + +} +} + +#endif |